Analysis

  • max time kernel
    124s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2023 07:35

General

  • Target

    79f8a6855bff25672d8de0eb51b794ca.exe

  • Size

    1.5MB

  • MD5

    79f8a6855bff25672d8de0eb51b794ca

  • SHA1

    833dd25b7df608612b1e92979076c8f92e40fe84

  • SHA256

    4a51d475a21dd8cc4d62d8b665b13dcf95c18ca9830f528092236fc8303b3cfa

  • SHA512

    ced9d2a7fb781325ae970af597c0bc7a0d951e7ce8d035b2bf9b7f83b5c3ec67a2a8243dd2d66d5fabd908c66bf3b3efc88be312d4ca9dbd69f09edeecdf63a5

  • SSDEEP

    24576:JsG0fR6HHfS/cG6cplv/cjukL2ZEN2TinYbR+FNvXU7cjukL2Y:JsHfR6HHfST6Qlv/cakLiIwinYb4FBUy

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Program crash 18 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe
    "C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1208
    • C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe
      C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4820
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe" /TN nMQUF5AE494a /F
        3⤵
        • Creates scheduled task(s)
        PID:1336
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 608
        3⤵
        • Program crash
        PID:3772
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN nMQUF5AE494a > C:\Users\Admin\AppData\Local\Temp\cVgg8tb.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1732
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 648
        3⤵
        • Program crash
        PID:1836
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 656
        3⤵
        • Program crash
        PID:2580
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 716
        3⤵
        • Program crash
        PID:4908
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 756
        3⤵
        • Program crash
        PID:4276
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 652
        3⤵
        • Program crash
        PID:3668
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1484
        3⤵
        • Program crash
        PID:556
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1920
        3⤵
        • Program crash
        PID:516
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 2144
        3⤵
        • Program crash
        PID:4316
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1920
        3⤵
        • Program crash
        PID:4756
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 2000
        3⤵
        • Program crash
        PID:4720
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1932
        3⤵
        • Program crash
        PID:3572
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1912
        3⤵
        • Program crash
        PID:2920
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1944
        3⤵
        • Program crash
        PID:4468
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1972
        3⤵
        • Program crash
        PID:1388
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1944
        3⤵
        • Program crash
        PID:4524
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 2172
        3⤵
        • Program crash
        PID:2688
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 620
        3⤵
        • Program crash
        PID:668
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4820 -ip 4820
    1⤵
      PID:4988
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks.exe /Query /XML /TN nMQUF5AE494a
      1⤵
        PID:1576
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4820 -ip 4820
        1⤵
          PID:3232
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4820 -ip 4820
          1⤵
            PID:1484
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4820 -ip 4820
            1⤵
              PID:3648
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4820 -ip 4820
              1⤵
                PID:1536
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4820 -ip 4820
                1⤵
                  PID:1108
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4820 -ip 4820
                  1⤵
                    PID:2176
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4820 -ip 4820
                    1⤵
                      PID:4888
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4820 -ip 4820
                      1⤵
                        PID:3548
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4820 -ip 4820
                        1⤵
                          PID:432
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4820 -ip 4820
                          1⤵
                            PID:1444
                          • C:\Windows\SysWOW64\WerFault.exe
                            C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4820 -ip 4820
                            1⤵
                              PID:3452
                            • C:\Windows\SysWOW64\WerFault.exe
                              C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4820 -ip 4820
                              1⤵
                                PID:2464
                              • C:\Windows\SysWOW64\WerFault.exe
                                C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4820 -ip 4820
                                1⤵
                                  PID:4480
                                • C:\Windows\SysWOW64\WerFault.exe
                                  C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4820 -ip 4820
                                  1⤵
                                    PID:1516
                                  • C:\Windows\SysWOW64\WerFault.exe
                                    C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4820 -ip 4820
                                    1⤵
                                      PID:2524
                                    • C:\Windows\SysWOW64\WerFault.exe
                                      C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4820 -ip 4820
                                      1⤵
                                        PID:4396
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4820 -ip 4820
                                        1⤵
                                          PID:3172

                                        Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\AppData\Local\Temp\79f8a6855bff25672d8de0eb51b794ca.exe

                                          Filesize

                                          490KB

                                          MD5

                                          25b476efa856acbc4c9bbc4a23c07217

                                          SHA1

                                          db4f564e11f7288480f0683dccbb3a75d21795ed

                                          SHA256

                                          27dea62bf319e864c1bad3d07e0e8488a7b208cb1ef0174bcc048579fc626fba

                                          SHA512

                                          5eb4a0b340ff2e479c6f7be421a4afc05f10ea302e5aa8195e69d848dd2bd2bdc5278bca69ca9aaa6ba537bdb08d66a47c3e802f47b9274e7f95850e7ed2ef40

                                        • C:\Users\Admin\AppData\Local\Temp\cVgg8tb.xml

                                          Filesize

                                          1KB

                                          MD5

                                          ffa7ffc147b208f2d12d062cf8750edb

                                          SHA1

                                          b3af64041b596af4c0710fdbc95860fc7e7f4414

                                          SHA256

                                          b24740fad1d1b0779bdfebe4dca1564b5c464d1dc303195a0d0a54568a5ce75a

                                          SHA512

                                          f5f7d263820d5eeeca4ae227c9ae5a5034beaa130120cb76a9cd8d57074c26c6cf360784f78e14d1b0b5674a7f3ffd3e35b7e95347a37b0d6bfc0a72da177254

                                        • memory/1208-0-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/1208-2-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/1208-1-0x0000000025030000-0x00000000250AE000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/1208-13-0x0000000000400000-0x000000000046B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4820-15-0x0000000023FA0000-0x000000002401E000-memory.dmp

                                          Filesize

                                          504KB

                                        • memory/4820-18-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB

                                        • memory/4820-22-0x0000000000400000-0x000000000045B000-memory.dmp

                                          Filesize

                                          364KB

                                        • memory/4820-23-0x00000000004B0000-0x000000000051B000-memory.dmp

                                          Filesize

                                          428KB

                                        • memory/4820-40-0x0000000000400000-0x000000000065C000-memory.dmp

                                          Filesize

                                          2.4MB